相关单词近義詞 essential 本質的, necessary 必要的, necessity 需要, requirement 必要條件, indispensable 不可缺少的, required 必需的, mandatory 法定的, obligatory 強制性的, vital 至關重要的, basic 基本的, qualification 資格, prerequisite 先決條件, need 需要, needful 必需的, needed 需要的臨近詞requisition, requirements net, requisites, requisite for, requisite value, requisite skill, requisite space, requisite oxygen, requisite amount, requisite measure, requisite voucher, requisite variety 返回 requisitely